Question

1. (b) Give four examples of physical change.

Answer 1

• Physical change: A change that alters some specific property of matter without any change in the composition of its molecules is called a physical change.

Examples of physical changes:

Some of the common examples of physical changes are given below:

(i) Evaporation of water by the heat of the sun.

(ii) Changing water into steam by boiling.

(iii) Magnetisation of iron.

(iv) Glowing of an electric bulb on the passage of electric current.